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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Black screen on KMS with 4.18.0-rc1 with Kaveri+Topaz, amdgpu, dc=1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106940">106940</a>
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<th>Summary</th>
<td>Black screen on KMS with 4.18.0-rc1 with Kaveri+Topaz, amdgpu, dc=1
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>blocker
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>DRM/AMDgpu
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
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<th>Reporter</th>
<td>nmset@netcourrier.com
</td>
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<pre>Since kernel 4.18.0-rc1, my laptop boots in a black screen with Kaveri+Topaz
GPUs, Xorg 1.20.0. The systems boots normally in the background. I can log in
blindly in sddm, press CTRL+ALT+DEL when KDE has booted invisibly and shutdown
the laptop with ENTER. I'm using the following options :
install radeon /bin/false
options amdgpu dc=1 si_support=1 cik_support=1
options radeon si_support=0 cik_support=0
Everything was just working until 4.18.0-rc1.
If I boot on another partition, I can inspect Xorg.0.log of the main partition,
which contains no errors.
With no options at all, or if dc=0, I can get a KDE usable session, excepting
suspend failing quite often.
Thanks for any input to resolve this. I can give more information upon your
instructions.</pre>
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